Home / 678,130.59-935,832.08-372,235.57

Finding the Fourth Proportional to 678,130.59, 935,832.08 and 372,235.57

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Solution

The fourth proportional to 678,130.59, 935,832.08 and 372,235.57 is: 513,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,130.59 : 935,832.08 = 372,235.57 : x
  2. Step 2: Convert to fraction form
    678,130.59/935,832.08 = 372,235.57/x
  3. Step 3: Cross multiply
    678,130.59x = 935,832.08 × 372,235.57
  4. Step 4: Simplify right side
    678,130.59x = 348,349,987,723.09
  5. Step 5: Solve for x
    x = 348,349,987,723.09/678,130.59
  6. Step 6: Final answer
    x = 513,691.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.